423204101 has 2 divisors, whose sum is σ = 423204102. Its totient is φ = 423204100.

The previous prime is 423204077. The next prime is 423204149. The reversal of 423204101 is 101402324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 389865025 + 33339076 = 19745^2 + 5774^2 .

It is a cyclic number.

It is not a de Polignac number, because 423204101 - 2²² = 419009797 is a prime.

It is a super-2 number, since 2×423204101² = 358203422206436402, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 423204101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423204181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211602050 + 211602051.

It is an arithmetic number, because the mean of its divisors is an integer number (211602051).

Almost surely, 2^423204101 is an apocalyptic number.

It is an amenable number.

423204101 is a deficient number, since it is larger than the sum of its proper divisors (1).

423204101 is an equidigital number, since it uses as much as digits as its factorization.

423204101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 423204101 is about 20571.9250679172. The cubic root of 423204101 is about 750.7867897347.

Adding to 423204101 its reverse (101402324), we get a palindrome (524606425).

The spelling of 423204101 in words is "four hundred twenty-three million, two hundred four thousand, one hundred one".